{
  "dataset": "Arbitr_EV_Patent_Dataset_Applications",
  "version": "v1.0",
  "format": "parquet",
  "description": "Schema for patent applications data files in data/applications/",
  "columns": {
    "doc_type": {
      "type": "string",
      "description": "Document type: 'application'",
      "required": true
    },
    "is_grant": {
      "type": "boolean",
      "description": "False if this is an application",
      "required": true
    },
    "publication_number": {
      "type": "string",
      "description": "USPTO publication number (raw doc-number)",
      "required": true
    },
    "pub_country": {
      "type": "string",
      "description": "Country code from publication reference (typically 'US')",
      "required": false
    },
    "pub_kind": {
      "type": "string",
      "description": "Kind code from publication reference (e.g., 'A1', 'A9')",
      "required": false
    },
    "publication_id_full": {
      "type": "string",
      "description": "Complete canonical identifier (country + doc_number + kind, e.g., US20250311830A1)",
      "required": false
    },
    "application_number": {
      "type": "string",
      "description": "Application number",
      "required": false
    },
    "filing_date": {
      "type": "string",
      "format": "date",
      "description": "Filing date in YYYY-MM-DD format",
      "required": false
    },
    "pub_date": {
      "type": "string",
      "format": "date",
      "description": "Publication date in YYYY-MM-DD format",
      "required": false
    },
    "title": {
      "type": "string",
      "description": "Patent title",
      "required": true
    },
    "abstract": {
      "type": "string",
      "description": "Patent abstract",
      "required": false
    },
    "assignees": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "List of assignee organization names",
      "required": false
    },
    "inventors": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "List of inventor names",
      "required": false
    },
    "cpc": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "List of CPC (Cooperative Patent Classification) codes",
      "required": false
    },
    "n_claims": {
      "type": "integer",
      "description": "Total number of claims",
      "required": false
    },
    "indep_claims": {
      "type": "integer",
      "description": "Number of independent claims",
      "required": false
    },
    "year": {
      "type": "integer",
      "description": "Publication year",
      "required": false
    },
    "ev_included_by": {
      "type": "string",
      "description": "Method by which patent was included: 'cpc' (CPC code match) or 'keyword' (keyword match)",
      "enum": ["cpc", "keyword"],
      "required": true
    }
  }
}